Without carrier permission, they might be violating some type of interference regulations, but I would also think the fake cell device itself and maybe its operator would need FCC licenses regardless of carrier permission. As an Ars Technica post I linked in another comment shows, the cell sites are probably being used outside of the constraints of their FCC licenses.
Comments
Do they? Why would the Govt. tell the carriers about it?
Because without carrier permission, they're violating Federal laws administered by the FCC.
Without carrier permission, they might be violating some type of interference regulations, but I would also think the fake cell device itself and maybe its operator would need FCC licenses regardless of carrier permission. As an Ars Technica post I linked in another comment shows, the cell sites are probably being used outside of the constraints of their FCC licenses.